example_usart.c File Reference

Example of usage of the maXTouch component with USART.

This example shows how to receive touch data from a maXTouch device using the maXTouch component, and display them in a terminal window by using the USART driver.

Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.

#include <asf.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "conf_board.h"
#include "conf_example.h"
#include "conf_uart_serial.h"

Macros
#define	MAX_ENTRIES   3
#define	STRING_LENGTH   40
#define	USART_TX_MAX_LENGTH   0xff

Functions
int	main (void)
void	mxt_handler (struct mxt_device *device)
static void	mxt_init (struct mxt_device *device)
	Set maXTouch configuration. More...

#define MAX_ENTRIES   3

Referenced by mxt_handler().

#define STRING_LENGTH   40

Referenced by mxt_handler().

#define USART_TX_MAX_LENGTH   0xff

int main

(

void

)

References uart_rs232_options::baudrate, board_init(), mxt_handler(), mxt_init(), mxt_is_message_pending(), stdio_serial_init(), sysclk_init(), USART_SERIAL_CHAR_LENGTH, USART_SERIAL_EXAMPLE, USART_SERIAL_EXAMPLE_BAUDRATE, USART_SERIAL_PARITY, and USART_SERIAL_STOP_BIT.

void mxt_handler

(

struct mxt_device *

device

)

References mxt_touch_event::id, MAX_ENTRIES, mxt_is_message_pending(), mxt_read_touch_event(), mxt_touch_event::status, STATUS_OK, STRING_LENGTH, USART_SERIAL_EXAMPLE, usart_serial_write_packet(), mxt_touch_event::x, and mxt_touch_event::y.

Referenced by main().

static void mxt_init ( struct mxt_device *  device )

static

Set maXTouch configuration.

This function writes a set of predefined, optimal maXTouch configuration data to the maXTouch Xplained Pro.

Parameters

device

Pointer to mxt_device struct

References Assert, delay_ms, MAXTOUCH_TWI_ADDRESS, MAXTOUCH_TWI_INTERFACE, MAXTOUCH_XPRO_CHG_PIO, MXT_GEN_ACQUISITIONCONFIG_T8, MXT_GEN_COMMANDPROCESSOR_CALIBRATE, MXT_GEN_COMMANDPROCESSOR_RESET, MXT_GEN_COMMANDPROCESSOR_T6, MXT_GEN_POWERCONFIG_T7, mxt_get_object_address(), mxt_init_device(), MXT_PROCI_SHIELDLESS_T56, MXT_RESET_TIME, MXT_SPT_CTE_CONFIGURATION_T46, MXT_TOUCH_MULTITOUCHSCREEN_T9, MXT_TWI_SPEED, mxt_write_config_object(), mxt_write_config_reg(), twihs_options::speed, STATUS_OK, and twihs_master_setup().

Referenced by main().